A camera structure replacing the rearward sight line of the cab window

Abstract

The invention discloses a camera structure that replaces the rearward sight line of a cab window, comprising a lens barrel, a monitoring device is installed in the lens barrel, a lens is embedded at one end of the lens barrel, an inner barrel is arranged inside the lens barrel, a gap is arranged between the lens barrel and the inner barrel to form a circulation chamber for cooling liquid circulation; a liquid storage tank is also arranged on the side wall of the lens barrel, cooling liquid is arranged in the liquid storage tank, a water inlet pipe connected with the bottom of the circulation chamber is arranged at the bottom of the liquid storage tank, and a water return pipe is arranged between the top of the circulation chamber and the liquid storage tank; a constricted pipe section in the middle of the air duct forms a venturi tube structure, and the negative pressure of the sea breeze passing through the constricted pipe of the air duct is used to attract air to pass through the liquid storage tank through the cooling pipe, so as to form a good cooling effect on the cooling liquid inside the liquid storage tank, which is beneficial to circulating cooling; the circulating chamber is wrapped around the outside of the monitoring device, so as to play a good heat insulation role, and the coolant can take away the heat generated when the monitoring device is running when circulating in the circulating chamber, so as to play a good heat insulation and cooling role.

Description

Technical Field

[0001] The invention relates to the field of marine monitoring equipment, and in particular to a camera structure that replaces the rearward sight line of a cab window. Background Art

[0002] According to regulations, self-unloading bulk carriers are required to have observation windows within a 360-degree field of vision in the cab. However, some cargo ships have cargo accumulation that affects the rear view, so sometimes cameras are installed to supplement the rear view. That is, cameras are installed on both sides of the cab facing backwards to transmit the images to the cab.

[0003] However, in actual use, since the surveillance cameras are working continuously and the cameras installed on the ships are explosion-proof, they are wrapped with a metal shell and sealed. This results in poor heat dissipation of the monitor. If the heat from long-term operation always stays in the monitor, it is easy to cause the internal temperature of the camera to be high, causing damage to internal components, shortening the service life of the surveillance camera, and affecting the driving operation of the ship. The prior art CN111770258B discloses a rotating heat dissipation security monitoring camera, including a lens barrel, a rotating column coaxially sealed and rotatably connected in an arc groove, and a liquid storage tank filled with coolant. The heat in the lens barrel is dissipated by allowing the coolant to circulate unidirectionally along the liquid inlet pipe-strip groove-liquid outlet pipe. The defect is that the center of gravity formed by the coolant entering the strip groove is used to automatically rotate the rotating column, but the rotating sealed connection between the strip groove and the liquid inlet pipe or the liquid return pipe will inevitably have contact resistance, and even if the coolant entering the strip groove is full, it is difficult to obtain a large rotational potential energy. Therefore, it is difficult to rotate the rotating column in actual use, and it is difficult to achieve the effect described in its technical solution.

[0004] In view of the above, we propose a camera structure that replaces the rearward view of the cab window to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the above technical problems and to provide a camera structure that replaces the rearward sight line of the cab window, so that the coolant can circulate well inside and has a better cooling effect on the coolant.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a camera structure that replaces the rearward sight line of the cab window, comprising a lens barrel, a monitoring device is installed in the lens barrel, a lens is embedded at one end of the lens barrel, an inner barrel is provided inside the lens barrel, and a gap is provided between the lens barrel and the inner barrel to form a circulation cavity for circulation of coolant; a liquid storage tank is also provided on the side wall of the lens barrel, and coolant is provided in the liquid storage tank, a water inlet pipe connected to the bottom of the circulation cavity is provided at the bottom of the liquid storage tank, and a water return pipe is provided between the top of the circulation cavity and the liquid storage tank;

[0007] It also includes a cooling circulation mechanism, which includes an air duct, which is arranged on one side of the liquid storage tank, a necked pipe section is arranged in the middle of the air duct, and a plurality of cooling pipes are arranged through the liquid storage tank, and one end of the plurality of cooling pipes is connected to the necked pipe section;

[0008] The cooling circulation mechanism also includes a circulation part, which includes pneumatic blades arranged in the air duct. A circulation impeller is arranged at the water inlet pipe, and the rotation of the pneumatic blades drives the circulation impeller to operate.

[0009] Furthermore, the circulation part also includes a connecting shaft arranged between the pneumatic blades and the circulating impeller, the connecting shaft passes through the lens barrel and the air duct and is rotatably connected, the pneumatic blades are rotatably connected in the air duct, and the circulating impeller is rotatably connected in the water inlet pipe, the pneumatic blades are connected to one end of the connecting shaft by a bevel gear set, and the other end of the connecting shaft is connected to the circulating impeller through a bevel gear set.

[0010] Furthermore, the circulation part includes a connecting shaft which passes through the lens barrel and is rotatably connected to the air duct, one end of the connecting shaft is fixedly connected to the pneumatic blade, and the other end is fixedly connected to the circulation impeller.

[0011] Furthermore, the circulation unit is also provided with a driving motor, and the output end of the driving motor is connected to the main shaft of the wind blade.

[0012] Furthermore, it also includes a temperature control damper structure, which includes a temperature sensing part, a damper body, and a drive box;

[0013] The temperature sensing part is arranged on the monitoring device in the inner cylinder to detect the temperature of the monitoring device; the temperature sensing part is connected to the driving box through a capillary tube, and the driving box controls the opening of the damper body;

[0014] The damper body is arranged at the front end of the air duct, and its action is used to control the size of the air duct opening. The damper body is hinged to the drive box through a control rod;

[0015] A deformation piece is provided in the driving box, one end of the capillary is connected to the deformation piece, the deformation piece has an expansion surface, the temperature sensing part, the capillary and the deformation piece are filled with liquid, the temperature of the temperature sensing part rises, the liquid expands due to heat, the expansion surface is displaced and the opening of the damper body is controlled.

[0016] Furthermore, an adjusting bolt is provided at one end of the deformation member away from the expansion surface. The adjusting bolt passes through the drive box and is threadedly connected. The adjusting bolt is rotated to change the position of the expansion surface.

[0017] Furthermore, a lever is hingedly provided in the drive box, the expansion surface cooperates with the first lever arm, the second lever arm cooperates with the control rod, the length of the first lever arm is smaller than the length of the second lever arm, and the end of the second lever arm is arranged near the hinged end of the control rod.

[0018] Furthermore, a worm gear is provided at one end of the control rod being hingedly connected to the drive box, a worm meshing with the worm gear is provided in the drive box, a reduction motor is connected to one end of the worm, and the movement of the reduction motor is controlled by the control module; a metal diaphragm is provided on the outer side of the expansion surface, and electrode contacts matching the expansion surface are also provided in the drive box, and the electrode contacts are electrically connected to the control module.

[0019] Furthermore, a heat sink is provided on the side of the liquid storage tank, and the heat sink extends out of the lens barrel and is provided with a plurality of heat sink fins.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The circulation cavity provided in the present invention is wrapped around the outside of the monitoring device, which can play a good role in heat insulation, and the coolant can take away the heat generated by the monitoring device when it is running when circulating in the circulation cavity, playing a good role in heat insulation and cooling;

[0022] 2. The necked pipe section in the middle of the air duct forms a Venturi tube structure. When sailing at sea, the negative pressure of the sea breeze passing through the necked pipe of the air duct draws air through the cooling pipe and passes through the liquid storage tank, which can form a good cooling effect on the coolant inside the liquid storage tank, which is conducive to circulating cooling.

[0023] 3. The wind-driven blades can use the sea breeze passing through the air duct to drive them to rotate automatically, thereby driving the circulation impeller to operate. The operation of the circulation impeller can promote the circulation of the coolant.

[0024] 4. The temperature-controlled damper structure can use the temperature sensing part to sense the temperature of the monitoring device, and use the thermal expansion and contraction principle of the liquid as a control signal to control the opening or closing of the damper body, thereby controlling the amount of sea breeze passing through the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the longitudinal section structure of the first embodiment of the present invention;

[0026] Figure 2 For the present invention Figure 1 Structural diagram of the AA section;

[0027] Figure 3 It is a schematic diagram of another arrangement form of the pneumatic blades and the circulating impeller in the present invention;

[0028] Figure 4 is a schematic structural diagram of a second embodiment of the present invention;

[0029] Figure 5 A structural design diagram of the drive box of the present invention;

[0030] Figure 6 Another structural diagram for driving the internal structure of the present invention;

[0031] In the figure: 1. lens barrel; 2. lens; 3. inner barrel; 4. circulation chamber; 5. liquid storage tank; 6. water inlet pipe; 7. water return pipe; 8. air duct; 9. necked pipe section; 10. cooling pipe; 11. pneumatic blades; 12. circulating impeller; 13. connecting shaft; 14. bevel gear set; 15. drive motor; 16. temperature sensing part; 17. damper body; 18. drive box; 19. capillary; 20. deformation part; 21. expansion surface; 22. adjusting bolt; 23. first lever; 24. second lever; 25. control lever; 26. worm gear; 27. worm; 28. reduction motor; 29. ​​metal diaphragm; 30. electrode contact; 31. control module; 32. heat sink; 33. heat sink fin. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Embodiment 1

[0034] A camera structure that replaces the rearward view of the cab window, such as Figure 1 As shown, it includes a lens barrel 1, an inner barrel 3 is provided inside the lens barrel 1, and a gap is provided between the lens barrel 1 and the inner barrel 3 to form a circulation chamber 4 for circulating the cooling liquid; the space inside the inner barrel 3 is used to install the monitoring device, a lens 2 is embedded at one end of the lens barrel 1, and a liquid storage tank 5 is also provided on the side wall of the lens barrel 1. The position of the liquid storage tank 5 is not limited and can be as shown in FIG. Figure 1 The lens barrel 1 is disposed at one end thereof, and can also be disposed on the side of the lens barrel 1, such as Figure 2 As shown, the shape of the lens barrel 1 can be cylindrical or prismatic; a coolant is provided in the liquid reservoir 5, and a water inlet pipe 6 connected to the bottom of the circulation chamber 4 is provided at the bottom of the liquid reservoir 5, and a return pipe 7 is provided between the top of the circulation chamber 4 and the liquid reservoir 5. When in use, the liquid reservoir 5 and the circulation chamber 4 are filled with coolant, and a communicating vessel can be formed by using the water inlet pipe 6 and the return pipe 7. The circulation chamber 4 is a heating end. As the coolant in the circulation chamber 4 evaporates, the coolant in the liquid reservoir 5 can be automatically replenished into the circulation chamber 4 to form a circulation of the coolant. However, the cooling effect of this free circulation is not ideal.

[0035] Therefore, in order to increase the circulation amount of the coolant, a cooling circulation mechanism is further provided in this embodiment, which is used to cool the coolant in the liquid storage tank 5 and to speed up the circulation amount of the coolant.

[0036] Specifically, since the sea breeze blowing towards the ship when the ship is sailing at sea has a large wind kinetic energy, and the device uses cameras for supplementing the rear view field of view set on both sides of the cab, the camera setting position has a better windward surface, which can better utilize the kinetic energy of the wind, such as Figure 1 As shown, the cooling circulation mechanism includes an air duct 8, the front end of the air duct 8 faces the front side of the ship so that the sea breeze can be blown in more conveniently, so as to utilize the wind energy of the sea breeze. Specifically, the air duct 8 is arranged on one side of the liquid storage tank 5, and a constricted pipe section 9 is arranged in the middle of the air duct 8, so that the air duct 8 forms a Venturi tube structure as a whole, and a plurality of cooling pipes 10 are arranged through the liquid storage tank 5, and one end of the plurality of cooling pipes 10 is connected to the constricted pipe section 9; when the wind enters the constricted pipe section 9 from the pipe opening of the air duct 8, the air flow changes from coarse to fine, and the gas flow rate is accelerated, so that the constricted pipe section 9 is formed. A certain negative pressure area is formed on the rear side of the neck tube section 9, so that the neck tube section 9 produces a certain negative pressure attraction effect on the cooling tube 10, so that the relatively low temperature air at the other end of the cooling tube 10 can be accelerated to enter the cooling tube 10. Since the cooling tube 10 is arranged through the liquid storage tank 5, the cooling effect on the coolant inside the liquid storage tank 5 can be good; in actual use, a number of heat sinks can be arranged in sequence on the outer periphery of the cooling tube 10 to increase the contact area between the cooling tube 10 and the coolant, thereby improving the heat dissipation effect on the coolant.

[0037] In addition, a heat sink 32 may be attached to the side of the liquid storage tank 5 , and the heat sink 32 extends out of the lens barrel 1 and is provided with a plurality of heat sink fins 33 to increase the heat dissipation area.

[0038] Embodiment 2:

[0039] Furthermore, the airflow passing through the air duct 8 can be reused. Specifically, the cooling circulation mechanism also includes a circulation part, which includes a pneumatic blade 11 arranged in the air duct 8, and a circulation impeller 12 is arranged at the water inlet pipe 6. The rotation of the pneumatic blade 11 drives the circulation impeller 12 to operate. The pneumatic blade 11 is arranged in the branch pipe, and the circulation impeller 12 arranged at the water inlet pipe 6 is driven to operate by the pneumatic blade 11, so that the wind force can be used to drive the internal circulation impeller 12 to accelerate the circulation of the coolant, thereby improving the cooling effect on the monitoring device;

[0040] As a connection structure between the wind blade 11 and the circulating impeller 12, such as Figure 1As shown, the circulation part also includes a connecting shaft 13 arranged between the wind blades 11 and the circulating impeller 12, the connecting shaft 13 passes through the lens barrel 1 and the air duct 8 and is rotatably connected. It can be understood that the rotating connection of the connecting shaft 13 needs to be sealed to the coolant, the wind blades 11 are rotatably connected and arranged in the air duct 8, and the circulating impeller 12 is rotatably connected and arranged in the water inlet pipe 6. The wind blades 11 are connected to one end of the connecting shaft 13 by a bevel gear set 14, and the other end of the connecting shaft 13 is connected to the circulating impeller 12 through the bevel gear set 14. This structure is a structure driven only by wind energy; if the present device is used in some occasions with relatively small wind force, it can also be as shown in FIG. Figure 1 A driving motor 15 is provided to actively drive the wind blade 11 to rotate. The output end of the driving motor 15 is connected to the main shaft of the wind blade 11, and can also enable the Venturi tube to achieve the same function.

[0041] As another connection structure between the wind blade 11 and the circulating impeller 12, Figure 3 As shown, the circulation part includes a connecting shaft 13 which passes through the lens barrel 1 and is rotatably connected to the air duct 8. One end of the connecting shaft 13 is fixedly connected to the pneumatic blades 11, and the other end is fixedly connected to the circulation impeller 12. In this connection form, the pneumatic blades 11 and the circulation impeller 12 are both horizontally arranged and coaxial with the connecting shaft 13. This arrangement has higher transmission efficiency and lower friction loss, and can also achieve the same effect as the aforementioned embodiment; similarly, a driving motor 15 that drives the pneumatic blades 11 to operate can also be set to achieve active drive.

[0042] Embodiment three:

[0043] The present invention can also be provided with a temperature-controlled damper structure, which can automatically sense the temperature of the monitoring device and control the opening size of the inlet end of the air duct 8 according to the temperature, thereby controlling the air intake volume. The temperature-controlled damper structure includes a temperature sensing portion 16, a damper body 17, and a drive box 18; the temperature sensing portion 16 is connected to the drive box 18 through a capillary tube 19, and the drive box 18 controls the opening of the damper body 17;

[0044] The temperature sensing part 16 is arranged on the monitoring device in the inner tube 3 to detect the temperature of the monitoring device. The specific shape of the temperature sensing part 16 is not limited, and it can be a closed cavity with a non-variable shape and size arranged at any position in the inner tube 3. The temperature sensing part 16 is connected to the capillary 19, and the capillary 19 is also a tubular structure that is pressurized and cannot expand. The other end of the capillary 19 is connected to the deformable member 20, and the deformable member 20 has a deformable expansion surface 21. The temperature sensing part 16, the capillary 19 and the deformable member 20 are filled with liquid. The temperature sensing part 16 can also be designed to be in a shape that fits the main heating part of the monitoring device so as to facilitate the perception of heat changes. When the temperature sensing part 16 is heated, the body of the liquid inside will expand, thereby pushing the expansion surface 21 of the deformable member 20 to bulge outward;

[0045] like Figure 5 As shown, specifically, the damper body 17 is arranged at the front end of the air duct 8, and its action is used to control the size of the opening of the air duct 8. The damper body 17 is hinged on the driving box 18 through the control rod 25; the deformation member 20 is arranged in the driving box 18 to drive the damper body 17 to open through the deformation of the expansion surface 21, thereby increasing the air inlet area to speed up the circulation speed of the coolant; because the deformation amplitude of the expansion surface 21 on the deformation member 20 is not enough to directly drive the control rod 25 to rotate at a large angle, based on the principle that the liquid is incompressible, the lever used to amplify the displacement is driven by its hydraulic pressure, and the lever is hinged in the driving box 18, and the expansion surface 21 cooperates with the first force arm 23 of the lever, and the expansion surface 21 cooperates with the first force arm 23 of the lever. When the expansion surface 21 bulges, it is squeezed on the first force arm 23 and pushes the lever to rotate. The second force arm 24 of the lever cooperates with the control rod 25. When the lever rotates, the second force arm 24 can push the control rod 25 to rotate. In order to amplify the displacement, the length of the first force arm 23 should be smaller than the length of the second force arm 24, and the end of the second force arm 24 is arranged close to the hinge end of the control rod 25. In this way, the displacement of the expansion surface 21 can be amplified by utilizing the lever principle twice, so that the damper body 17 can be fully opened. It can be understood that the shape of the damper body 17 is not limited by the accompanying drawings. The damper body 17 can be circular or rectangular, but it needs to match the shape of the inlet of the air duct 8.

[0046] Furthermore, an adjusting bolt 22 is provided at one end of the deformable member 20 away from the expansion surface 21. The adjusting bolt 22 passes through the drive box 18 and is threadedly connected. The adjusting bolt 22 is rotated to change the position of the expansion surface 21. By rotating the adjusting bolt 22, the expansion surface 21 can be moved closer to or away from the first force arm 23, thereby achieving the purpose of fine-tuning the position.

[0047] Embodiment 4:

[0048] As an improvement of the third embodiment, Figure 6 As shown, further, the following electric structure can be adopted in the control box. Specifically, the control rod 25 is hingedly connected to the drive box 18 and a worm gear 26 is provided at one end. The drive box 18 is provided with a worm 27 meshing with the worm gear 26. One end of the worm gear 27 is connected to a reduction motor 28, and the reduction motor 28 is controlled by a control module 31. A metal diaphragm 29 is provided on the outer side of the expansion surface 21, and an electrode contact 30 matching the expansion surface 21 is also provided in the drive box 18. The electrode contact 30 is electrically connected to the control module 31. A PLC control module 31 can be set in the control module 31. When the expansion surface 21 protrudes, the metal diaphragm 29 contacts the electrode contact 30 to realize circuit conduction. The PLC control module 31 receives the signal to control the operation of the reduction motor 28, and directly rotates the control rod 25 through the structure of the worm gear 27 and the worm gear 26 to open the damper body 17.

[0049] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A camera structure for replacing the rearward sight line of a cab window, comprising a lens barrel (1), a monitoring device is installed in the lens barrel (1), and a lens (2) is embedded at one end of the lens barrel (1), characterized in that: An inner cylinder (3) is provided inside the lens cylinder (1), and a gap is provided between the lens cylinder (1) and the inner cylinder (3) to form a circulation chamber (4) for circulating a cooling liquid; a liquid storage tank (5) is also provided on the side wall of the lens cylinder (1), and a cooling liquid is provided in the liquid storage tank (5); a water inlet pipe (6) communicating with the bottom of the circulation chamber (4) is provided at the bottom of the liquid storage tank (5), and a water return pipe (7) is provided between the top of the circulation chamber (4) and the liquid storage tank (5); It also includes a cooling circulation mechanism, which includes an air duct (8), the air duct (8) is arranged on one side of the liquid storage tank (5), a necked pipe section (9) is provided in the middle of the air duct (8), a plurality of cooling pipes (10) are provided through the liquid storage tank (5), and one end of the plurality of cooling pipes (10) is connected to the necked pipe section (9); The cooling circulation mechanism also includes a circulation part, which includes a pneumatic blade (11) arranged in the air duct (8). A circulation impeller (12) is arranged at the water inlet pipe (6), and the rotation of the pneumatic blade (11) drives the circulation impeller (12) to operate.

2. A camera structure for replacing the rearward sight line of the cab window according to claim 1, characterized in that: The circulation unit also includes a connecting shaft (13) arranged between the pneumatic blades (11) and the circulation impeller (12); the connecting shaft (13) passes through the lens barrel (1) and is rotatably connected to the air duct (8); the pneumatic blades (11) are rotatably connected to the air duct (8); the circulation impeller (12) is rotatably connected to the water inlet pipe (6); the pneumatic blades (11) are connected to one end of the connecting shaft (13) by a bevel gear set (14); and the other end of the connecting shaft (13) is connected to the circulation impeller (12) via the bevel gear set (14).

3. A camera structure for replacing the rearward sight line of the cab window according to claim 1, characterized in that: The circulation part comprises a connecting shaft (13) which passes through the lens barrel (1) and is rotatably connected to the air duct (8); one end of the connecting shaft (13) is fixedly connected to the wind blade (11), and the other end is fixedly connected to the circulation impeller (12).

4. A camera structure for replacing the rearward sight line of the cab window according to claim 2 or 3, characterized in that: The circulation part is also provided with a driving motor (15), and the output end of the driving motor (15) is connected to the main shaft of the wind blade (11).

5. A camera structure for replacing the rearward sight line of a cab window according to any one of claims 1 to 3, characterized in that: It also includes a temperature control damper structure, which includes a temperature sensing portion (16), a damper body (17), and a drive box (18); A temperature sensing part (16), the temperature sensing part (16) is arranged on the monitoring device in the inner cylinder (3) to detect the temperature of the monitoring device; the temperature sensing part (16) is connected to a driving box (18) through a capillary tube (19), and the driving box (18) controls the opening of the damper body (17); The damper body (17) is arranged at the front end of the air duct (8), and its action is used to control the size of the opening of the air duct (8). The damper body (17) is hinged to the driving box (18) through a control rod (25); A deformation member (20) is arranged in the driving box (18), one end of the capillary tube (19) is connected to the deformation member (20), the deformation member (20) has an expansion surface (21), the temperature sensing portion (16), the capillary tube (19) and the deformation member (20) are filled with liquid, and when the temperature of the temperature sensing portion (16) rises, the liquid expands due to heat, so that the expansion surface (21) is displaced and the opening of the damper body (17) is controlled.

6. A camera structure for replacing the rearward sight line of the cab window according to claim 5, characterized in that: An adjusting bolt (22) is provided at one end of the deformable member (20) away from the expansion surface (21). The adjusting bolt (22) passes through the drive box (18) and is threadedly connected. The position of the expansion surface (21) is changed by rotating the adjusting bolt (22).

7. A camera structure for replacing the rearward sight line of the cab window according to claim 5, characterized in that: A lever is hingedly arranged inside the driving box (18); the expansion surface (21) cooperates with a first lever arm (23) of the lever; the second lever arm (24) of the lever cooperates with a control rod (25); the length of the first lever arm (23) is shorter than the length of the second lever arm (24); and the end of the second lever arm (24) is arranged close to the hinged end of the control rod (25).

8. A camera structure replacing the rearward sight line of the cab window according to claim 5, characterized in that: A worm wheel (26) is provided at one end of the control rod (25) hingedly connected to the drive box (18); a worm (27) meshing with the worm wheel (26) is provided in the drive box (18); a reduction motor (28) is connected to one end of the worm (27); and the reduction motor (28) is controlled by a control module (31); a metal diaphragm (29) is provided on the outer side of the expansion surface (21); an electrode contact (30) matching with the expansion surface (21) is also provided in the drive box (18); and the electrode contact (30) is electrically connected to the control module (31).

9. A camera structure for replacing the rearward sight line of a cab window according to claim 1, characterized in that: A heat sink (32) is attached to the side of the liquid storage tank (5), and the heat sink (32) extends out of the lens barrel (1) and is provided with a plurality of heat sink fins (33).

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